Video Audio Replacer

Built for people who work in post-production

• Post-production editors replacing scratch audio with the final mix
• Sound editors delivering clean audio back to picture
• Assistant editors syncing a new audio deliverable to an existing video export
• Filmmakers swapping guide track audio for a polished final mix
• Film and TV composers syncing their score to a picture cut for director or client approval
• Broadcasters and online distributors updating audio on existing master

Why not just use your editing software?

Your NLE — Premiere Pro, DaVinci Resolve, Final Cut — can replace audio, but it re-encodes the entire video to do it. That means quality loss, long render times, and a bigger file than you started with. All for something as simple as swapping a track. Video Audio Replacer copies the video stream exactly as-is and only touches the audio. The result is identical video quality, a fraction of the time, and no unnecessary transcoding.

Professional features, zero complexity

• Lossless video — the video stream is copied, never re-encoded
• 320kbps AAC output for standard delivery, or lossless audio with Keep Original Audio mode
• Keep Original Audio (lossless). Preserves WAV or FLAC inside MXF, MOV, MKV, AVI (PCM) and MP4 (Apple Lossless)
• Supports stereo, 5.1, 7.1, and poly WAV multi-channel audio
• 5.1 surround layout choice. Output as discrete mono tracks or a single interleaved 5.1 stream (MOV / MKV)
• Discrete mono AAC tracks for 3–5 channel audio. Prevents channel reordering in DaVinci Resolve and other NLEs
• Auto-lossless mode for 7.1 and 8-channel audio. Keeps full fidelity when AAC cannot handle the channel count
• Handles MXF, MP4, MOV, AVI, MKV, WebM, FLV, and WMV video files
• H.264 camera MXF compatibility. Detects Sony XAVC and other H.264-in-MXF sources and offers to save as MP4 for full NLE compatibility
• Per-format channel validation. Warns you before processing if your poly WAV exceeds the container's channel limit
• Accepts MP3, WAV, AAC, M4A, FLAC, OGG, and WMA audio files
• Drag-and-drop interface. No learning curve
• Show in Finder / Show in Explorer — reveals the output file immediately after processing
• Length mismatch handling: trim, add black frames, or pad with silence
• Real-time progress tracking
• 14-day free trial. No credit card required
• One-time purchase, lifetime updates

What's new in version 1.0.1

• MXF support : import and export professional MXF containers used in broadcast and film workflows
• Keep Original Audio (lossless) : replaces "Professional Mode"; preserves WAV/FLAC losslessly in MXF, MOV, MKV, AVI, and MP4
• Discrete mono AAC tracks : 3, 4, and 5-channel audio outputs as separate mono tracks, preventing channel reordering in DaVinci Resolve
• 5.1 surround layout toggle : choose discrete mono tracks or a single interleaved 5.1 stream when using Keep Original Audio in MOV or MKV
• Auto-lossless mode : 7.1 and 8-channel audio files automatically lock into Keep Original Audio mode
• H.264 camera MXF warning : detects Sony XAVC and similar H.264-in-MXF sources; offers to save as MP4 for full NLE compatibility
• Per-format channel validation : clear error before processing if a poly WAV exceeds the container's channel limit
• Show in Finder / Show in Explorer : reveals the output file in your file browser after processing
• License stability : license is now preserved across app updates and only requires re-validation if hardware changes are detected

Pricing

• One-time purchase. No subscription. No monthly fees.
• Includes lifetime updates and priority support.
• Single-computer license. Transferable between machines.

System Requirements

• Windows 10 or later (64-bit) — 4GB RAM minimum
• macOS 10.13 or later — Intel and Apple Silicon — 4GB RAM minimum